I have more on Princess Mafada she makes into a Fuhrer conference 20 May 1943 Hitler is discussing the situation in Italy and starts ranting about his state visit there in 1938 .

Hitler: I was supposed to take the Countess Edda Ciano in to a dinner. Suddenly Philipp rushed in with his Mafalda, and the whole program was upset. Great excitement; I has to sit next to Mafalda. What do I care about Mafalda? As far as I'm concerned, she is the wife of a German Oberpraesident, period, that's that. On top of that, her intellectual qualities aren't such that would charm you-to say nothing of her looks."

This is from the books "Hitler Directs His War" Felix Gilbert and "Hitler and His Generals: Military Conferences 1942-1945" Helmet Heiber. The latter on amazon.com was a spot where you can look inside. Note Hitler from late 1942 to 1945 had senographers take notes on what was said at his conferences. Most of these notes got burned at the end of WW II. Some where recovered and Heibers book has all that survived. I would also like to point out the Germans were furious with the Italians for their surrender to the Allies in September 1943. Which is why Mafalda got tossed in a KZ camp. In the late war and early post WW II years they blamed every defeat that occurred in North Africa on Italian treachery and incompetence.

The Goebbels comments on her can be found in the book "The Goebbels Diaries"